流路内部の突起から生じる渦構造の調査

抄録

EGR cooler is a heat exchanger that reduces NOx emissions and improves fuel consumption of cars. Up to now, fin shape Vortex generator have been used to improve the heat transfer performance, but in recent years, raised dimple shape have attracted attention. Although this dimple is effective for reducing of soot deposits, it does not generate vortices that improve heat transfer performance. The purpose of this research is to compare the shapes of protrusions using CFD for cost reduction, and propose the shapes of protrusions that meet the requirements.